The nude has been a subject of photography almost since its invention in the nineteenth century. Early photographers often selected poses that imitated the classical nudes of the past as seen by the grand Masters of the era. Even the Popes of the Catholic Church hired artist such as Da Vinci or Michelangelo to paint or sculpt naked, full frontal nudes that clearly showed genitalia. Today, the Photographer often chooses poses that either show emotion or are most specific to lighting styles which show the human form. Full frontal nudity was accepted even pre- Renascence era rejoicing in the beauty of the human form. I find it's simply whats in our own heart and acceptance of man. I also find many reject any nudity because of personal shame that quite possibly should be addressed by a Psychologist.